| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 1 | Very easy | 7 |
0.6%
|
| 2 | Easy | 25 |
2.1%
|
| 3 | Difficult | 36 |
3%
|
| 4 | Very Difficult | 26 |
2.2%
|
| 7 | No contact | 1106 |
91.9%
|
| 8 | Refused | 2 |
0.2%
|
| 9 | Don't know | 2 |
0.2%
|